Color of Copper/Copper Oxide

Color of Copper/Copper Oxide

© 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 33(2021), 15 vom: 04. Apr., Seite e2007345
1. Verfasser: Kim, Su Jae (VerfasserIn)
Weitere Verfasser: Kim, Seonghoon, Lee, Jegon, Jo, Yongjae, Seo, Yu-Seong, Lee, Myounghoon, Lee, Yousil, Cho, Chae Ryong, Kim, Jong-Pil, Cheon, Miyeon, Hwang, Jungseek, Kim, Yong In, Kim, Young-Hoon, Kim, Young-Min, Soon, Aloysius, Choi, Myunghwan, Choi, Woo Seok, Jeong, Se-Young, Lee, Young Hee
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article atomic sputtering epitaxy (ASE) coherent oxidation color control interfaces laser-oxide lithography single-crystal copper thin films
Beschreibung
Zusammenfassung:© 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH.
Stochastic inhomogeneous oxidation is an inherent characteristic of copper (Cu), often hindering color tuning and bandgap engineering of oxides. Coherent control of the interface between metal and metal oxide remains unresolved. Coherent propagation of an oxidation front in single-crystal Cu thin film is demonstrated to achieve a full-color spectrum for Cu by precisely controlling its oxide-layer thickness. Grain-boundary-free and atomically flat films prepared by atomic-sputtering epitaxy allow tailoring of the oxide layer with an abrupt interface via heat treatment with a suppressed temperature gradient. Color tuning of nearly full-color red/green/blue indices is realized by precise control of the oxide-layer thickness; the samples cover ≈50.4% of the standard red/green/blue color space. The color of copper/copper oxide is realized by the reconstruction of the quantitative yield color from the oxide "pigment" (complex dielectric functions of Cu2 O) and light-layer interference (reflectance spectra obtained from the Fresnel equations) to produce structural color. Furthermore, laser-oxide lithography is demonstrated with micrometer-scale linewidth and depth through local phase transformation to oxides embedded in the metal, providing spacing necessary for semiconducting transport and optoelectronics functionality
Beschreibung:Date Revised 13.10.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202007345